<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Bar3D Simplex Noise - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="lib/simplex.js"></script>
        <script src="lib/dat.gui.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'), null, {
                devicePixelRatio: 1
            });

            var noise = new SimplexNoise(Math.random);
            var xData = [];
            var yData = [];
            function generateData(theta, min, max) {
                var data = [];
                for (var i = 0; i <= 30; i++) {
                    for (var j = 0; j <= 30; j++) {
                        var value = noise.noise2D(i / 20, j / 20);
                        valMax = Math.max(valMax, value);
                        valMin = Math.min(valMin, value);
                        data.push([i, j, value * 2 + 4]);
                    }
                }
                return data;
            }
            var valMin = Infinity;
            var valMax = -Infinity;
            var data = generateData(2, -5, 5);
            console.log(valMin, valMax);

            chart.setOption({
                visualMap: {
                    show: false,
                    min: 2,
                    max: 6,
                    inRange: {
                        color: ['#313695', '#4575b4', '#74add1', '#abd9e9', '#e0f3f8', '#ffffbf', '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026']
                    }
                },
                xAxis3D: {
                    type: 'value'
                },
                yAxis3D: {
                    type: 'value'
                },
                zAxis3D: {
                    type: 'value',
                    max: 10,
                    min: 0
                },
                grid3D: {
                    show: false,
                    postEffect: {
                        enable: true,
                        screenSpaceAmbientOcclusion: {
                            enable: true,
                            radius: 2,
                            intensity: 1.0,
                            quality: 'medium'
                        },
                        screenSpaceReflection: {
                            enable: true
                        },
                        depthOfField: {
                            // enable: true
                        }
                    },
                    axisLine: {
                        lineStyle: { color: '#fff' }
                    },
                    axisPointer: {
                        lineStyle: { color: '#fff' }
                    },
                    viewControl: {
                        distance: 100,
                        alpha: 20
                    },
                    light: {
                        main: {
                            shadow: true,
                            intensity: 1
                        },
                        ambient: {
                            intensity: 0
                        },
                        ambientCubemap: {
                            texture: 'asset/pisa.hdr',
                            exposure: 2,
                            diffuseIntensity: 1
                        }
                    }
                },
                series: [{
                    type: 'bar3D',
                    data: data,
                    shading: 'realistic',
                    silent: true,
                    bevelSize: 0.4,
                    barSize: 2,
                    realisticMaterial: {
                        roughness: .2,
                        metalness: 1
                    },
                    itemStyle: {
                        color: '#fff'
                    }
                }]
            });

            window.onresize = chart.resize;

            var config = {
                roughness: 0.2
            }
            var gui = new dat.GUI();
            gui.add(config, 'roughness', 0, 1).onChange(function () {
                chart.setOption({
                    series: [{
                        realisticMaterial: {
                            roughness: config.roughness
                        }
                    }]
                });
            });
        </script>
    </body>
</html>